UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources

Click here for more information about laboratory operations and procedures

If you have additional questions regarding this test, please call: 415-353-1667

Search Our Test Menu

Barbiturates, Urine, Quantitative

Item Value
Available Stat? No
Test code BARQNT
Performed by ARUP
Sendout? Yes
Method Quantitative Gas Chromatography-Mass Spectrometry
Container type Urine container
Amount to Collect 3.5 mL
Sample type Urine
Preferred volume 3.5 mL
Min. Volume 1.5 mL
Processing notes Aliquot and freeze. Transport to CB frozen. Order ARUP test code 2012213.
Ref Lab Rejection Criteria Specimens exposed to repeated freeze/thaw cycles.
Normal range
Synonyms Barbiturates Confirmation, Phenobarbital, Butalbital, Pentobarbital, Amobarbital, Secobarbital, Butisol, Alurate, Amytal, Apobarbital, Fiorinal, Gemonil, Metharbital, Seconal, Tuinal
Stability Ambient: 1 week; Refrigerated: 1 month; Frozen: 3 years
Turn around times 2-5 days
Additional information This assay is designed to detect: Amobarbital, Butalbital, Pentobarbital, Phenobarbital and Secobarbital.

Positive cutoff: 50 ng/mL

For medical purposes only; not valid for forensic use.

The absence of expected drug(s) and/or drug metabolite(s) may indicate non-compliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, diluted/adulterated urine, or limitations of testing. The concentration value must be greater than or equal to the cutoff to be reported as positive. Interpretive questions should be directed to the laboratory.
CPT coding 80345 (Alt code: G0480)
LOINC code 3950-3, 11071-8, 3926-3, 11230-0, 19695-6
Last Updated 1/11/2018 3:19:25 PM
Entry Number 1826
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center